Chill-mold for casters.



PATENTED DEC. 25, 1906.

T. ALEXANDER.v CHILL MOLD FOR OASTERS.

APP ON 1' N PATENTEI) B0. 25, 1906.

- T. ALEXANDER.

CHILL MOLD FOR OASTBRS.

UNITED STATES PATENT OFFICE.

CHILL-MOLD FOR CASTERS.

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed January 20. 1906- Serial No. 297,020.

To all whom it may concern.-

Be it known that I, TONY ALEXANDER, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Ohill-Molds for Casters, of which the following is a specification.

Ball-casters having inner protuberances forming bearings in order to be effective and lasting require said bearings to be hard. To meet this requirementiand such others as are essential in a practical and commercial article of this class is the purpose of this invention.

The results and advantages aforesaid are attained by forming the casters in a chillmold, which mold in accordance with the invention is formed of sections, two being hinged or pivoted and two slidable, the latter being plungers and mounted to reciprocate between the hinged sections, the latter being designated as the body-sections.

. The invention consists of the novel structure whereby the plunger-sections are supported by a body-section, preferably the movable one, and have a limited movement, and, in combination with the mold, of an operating-handle pivoted to the movable bodysection to swing the same open and shut and arranged to operate between the plunger-sections, so as to force them outward after each casting, the whole admitting of the three operations being rapidly and conveniently performed.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and accompanying drawings.

While the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereof, still the preferred embodiment is shown in the accompanying drawings, in which Figure 1 is a perspective view of a mold embodying the invention, the full and dotted lines showing two positions of the operatinghandle. Fig. 2 is a perspective view of the mold as it appears when open and after the removal of a caster, which latter is shown in a detached view. Fig. 3 is a transverse section of the mold, taken on a plane through the sprue-hole. Fig. 4 is a sectional detail showing the parts of the mold-sections bordering upon the mold-cavity. Fig. 5 is a horizontal section of the mold, taken on a plane passed through the center of the mold-cavity, and showing a modification of the invention.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters. f The mold comprises the body-sections 1 and 2 and the plunger-sections 3 and 4. The body-sections 1 and 2 are hingedly or pivotally connected and for this piu'pose are provided with mating knuckles having openings through which a pintle 5 is passed and upon which the sections relatively swing. v Recesses 6 are formed in the meeting faces of the sections 1 and 2 upon 0 posite ends of the mold-cavity 7 and unitecfly form openings to receive the relative plunger-sections 3 and 4. The sprue-hole 8 is formed partly in each of the body-sections 1 and 2. To prevent separation or accidental opening of the mold, a lock device is provided, the same consisting of a turn-button 9-, which has its stem mounted in an enlargement 10 of the section 1.

The mold is constructed of metal and is made sufficiently heavy to withstand both eral extension 13, which is assed through a 5 slot 14, extended inward from each end of the section 2, the extension 13 projecting beyond the outer side of the section 2, so as to receive a pin 15, which acts as a stop to limit the outward movement of the plun ersection. A flange or stop 16 is provided at each end of the section 2 and is adapted to be engaged by the pin or stop 15 to limit the outward movement of the plunger-sections. The operating-handle 12 is pivotally mounted upon a stud 17, projected from the section 2, the upper end of the handle 12 coming between the inner ends of the lateral extensions 13, so that upon moving the handle 12 upon its pivot-stud 17 the plunger-sections ICC will be thrown outward, thereby clearing the casterframe preliminary to opening the mold by swinging the handle 12 from a vertical to a horizontal position.

One of the plunger-sections, as 3, is formed with a longitudinal opening 18 to receive the stem 19, about which the frame 20 of the caster is molded. The opposite plunger has its end made rounding to correspond to the socket to be formed in the end of the frame 20, and the rounded end of the plunger 4 has a central depression 21 and lateral depressions 22, corresponding to the central and lateral bearings to be provided at the top and sides of the socket of the frame 20. The center depression 21 may receive the head of the stem 19, as indicated in Fig. 4;, or the metal or material may enter said depression and form the central bearing or protuberance, as indicated in Fig. 5.

When the mold is in condition to receive the material forming the caster-frame, it is closed and locked and appears substantially as shown in Fig. 1. After the frame has been cast it is released by outward movement of the plungers and swinging the sections 1 and 2 open, as indicated in Fig. 2. The longitudinal movement of the plungers 3 and 2 is necessary to admit of their clearing the socket and the stem of the caster-frame, as will be readily understood. The handle 12 is made sufficiently heavy to act as a knocker for forcing the plungers outward and to serve as means for swinging the section 2 open and shut. The plunger-sections after being forced outward are moved inward by hand when returning the parts to normal position.

Having thus described the invention, what is claimed as new is- 1. A mold comprising body-sections, plunger-sections operating in said body-sections, and an operating-handle applied to one of the body-sections and movable in one direction for actuation thereof, and arranged to coact with the plunger-sections by movement in a different direction, to operate the latter.

2. Achill-mold comprising body-sections and plunger-sections operating in openings formed by depressions in the meeting faces of the body-sections, and an operatinghandle pivoted to the movable body-section for swinging the same open and shut, said operating-handle having a portion thereof arran ed to engage the plunger-sections to admit o throwing the latter outward.

3. A chill-mold for casters comprising body-sections, one of said sections being formed with longitudinal slots, plunger-sections arranged for opposite movement inthe body-sections and having extensions projecting laterally therefrom and movable in the longitudinal slots of said body-sections, and a handle pivoted to the mold and having an end thereof arranged to engage either of the extensions of the plunger-sections to force said sections in opposite directions.

4. A chill-mold for casters, the same comprising body-sections, one of which is formed with longitudinal slots, plunger-sections arranged to operate in recesses formed in the meeting faces of the body-sections and having lateral extensions to operate in the longitudinal slots provided in one of said bodysections, pins passed through projecting portions of the lateral extensions of the plungersections and serving to retain the same in place, stops at the outer ends of the slotted bodysection to engage with said pins to limit the outward movement of the plungersections, and a handle pivoted to one of the body-sections for operation thereof and coacting with the extensions of the plungersections for actuation of the latter.

In testimony whereof I affix my signature in presence of two witnesses.

TONY ALEXANDER. Witnesses:

J. D. YOAKLEY, V. B. HILLYARD. 

